These brushless motors have a really interesting feature... a rubber damper build into the shaft. These are also sporting 4x9x4 NSK bearings which should be more robust than an 8mm bearing. Other than that, these are running high temp N52H magnets, single strand copper windings, a hollow titanium shaft, low profile nylock prop nut, and are made from 7076 aluminum that has been electroplated with a pimp ass plating. I haven't run these yet, but soon... soon. And then I'll have more thoughts. Let’s connect: Instagram – https://www.instagram.com/joshuafwith...